Forgive me, I am a bit behind the times.
I am still reading LXF161 and in reply to Mailserver article ¨Speed limit¨ Graham answers put the relevant DVD in the slot and type ¨sudo update-manager -d¨
Can it really be so simple to update my Mint 12 to Mint 13?
I assume that it would keep my existing default settings - or am I being a bit naive?
I would backup first, of course.
Any advice would be most appreciated.
Best
David

OK, plan B - install from dvd.
It offered me the opp to dual-boot from old and/or new soft.
I have a 200 GB HDD and me /home is only 700 MB, so I chose that.
It rejected me user/pass and after a few secs installed anyway.
Mint 12 stet, Mint 13 new partition.
It said /David from 12 copied to 13. It lied like a hairy leg, again...

Booted into Mint 13 and no 3D acceleration.
Tried to get Nvidia 173 et al to install, but no chance from any choices, so I looked at Accounts User David. Says Supervisor, but does not say what my limits are. I tried again and got a flashing msg
¨Unable to unlock, No authority¨

I feel a glass of wine coming on....
Any offers of help will be much respected.

Many thanx for your input RAM. My original post contained the correct spelling, my second post contained a misspelling, as I was tired. Sorry.
After an overnight break I obtained the same result and did a clean install of Mint 13 from the LXF DVD - for which I thank the team.
I am now freshly Mintified.
Best
David

Sadly the nightmare continues. Following a clean install from the LXF DVD I spent the weekend setting up Mint 13. Almost finished sorting out my contents and settings but when I logged on yesterday I got the usual black screen and the message ¨Ubuntu 12.04 and ....broken pipe¨ and then the usual Mint login screen after which the screen went cobalt blue and logged me into something like Cinnamon, but was not right. I could work with it so I carried on.
This morn I got the purple Ubuntu screen and the messages Ubuntu 12.04, then the usual grey Mint login followed by the cobalt screen and what looks to be a Mint setup.
I have tried to alter the Cinnamon background from the tools menu, but although I can see and select the Mint screen it will not allow me to move there.
Any ideas, please?
Best
David